Wheelchair bumper



FIG. 1 is a perspective view of a wheelchair bumper of the new design;

FIG. 2 is a front elevational view of the wheelchair bumper of FIG. 1;

FIG. 3 is a rear elevational view of the wheelchair bumper of FIG. 1;

FIG. 4 is a left side elevational view of the wheelchair bumper of FIG. 1;

FIG. 5 is a right side elevational view of the wheelchair bumper of FIG. 1;

FIG. 6 is a top plan view of the wheelchair bumper of FIG. 1; and,

FIG. 7 is a bottom plan view of the wheelchair bumper of FIG. 1.

The portions of the Figures shown in broken lines are not part of the claimed design and are for illustration only. 

The ornamental design for a wheelchair bumper, as shown and described. 